From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5F563C64EAD for ; Tue, 9 Oct 2018 13:26:18 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2388E214C5 for ; Tue, 9 Oct 2018 13:26:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="rpyLZ6Yv" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2388E214C5 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=lst.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727589AbeJIUnM (ORCPT ); Tue, 9 Oct 2018 16:43:12 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:49592 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727477AbeJIUnK (ORCPT ); Tue, 9 Oct 2018 16:43:10 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender :Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From :Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=+X8AkMvhaCh2A6t5uXBVRn35aMYZZ+/hh9Cwb5Qv+ts=; b=rpyLZ6YvZXHfiGUtIIrCY/qTI3 NbJFMlXogf9f9yqOcfRPbnZhcyu0MzTVOzBxq/9rnc7ArXxSu6Zjv07gqCTZS+pfOi3a5opVFMut5 R2HBm6b201wRWNUTC/xmvVRZLqZanoVvu5VbAmOgb8s2QERa9LBR0qTpEVBJmXTgNrXAQNae3/2tQ QUYwo68x4wPzlMOkbR4ukjwJN3SxuJTFdTQ1ocfY6d6tZW+P21kFrBQIGH1LyUXROGkqLNTpap1ga kZakTm2C41zhMHGd23oBHeyEWYzDYMFKao3HxrDenHxHyF0mXxB7f24YLHII5yKeTzYi96i2xHobh smXPsyoQ==; Received: from clnet-p19-102.ikbnet.co.at ([83.175.77.102] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.90_1 #2 (Red Hat Linux)) id 1g9s13-0001CT-Uu; Tue, 09 Oct 2018 13:25:38 +0000 From: Christoph Hellwig To: Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman Cc: linuxppc-dev@lists.ozlabs.org, iommu@lists.linux-foundation.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 15/33] powerpc/powernv: remove pnv_pci_ioda_pe_single_vendor Date: Tue, 9 Oct 2018 15:24:42 +0200 Message-Id: <20181009132500.17643-16-hch@lst.de> X-Mailer: git-send-email 2.19.0 In-Reply-To: <20181009132500.17643-1-hch@lst.de> References: <20181009132500.17643-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This function is completely bogus - the fact that two PCIe devices come from the same vendor has absolutely nothing to say about the DMA capabilities and characteristics. Signed-off-by: Christoph Hellwig --- arch/powerpc/platforms/powernv/pci-ioda.c | 28 ++--------------------- 1 file changed, 2 insertions(+), 26 deletions(-) diff --git a/arch/powerpc/platforms/powernv/pci-ioda.c b/arch/powerpc/platforms/powernv/pci-ioda.c index cde710297a4e..913175ba1c10 100644 --- a/arch/powerpc/platforms/powernv/pci-ioda.c +++ b/arch/powerpc/platforms/powernv/pci-ioda.c @@ -1746,31 +1746,6 @@ static void pnv_pci_ioda_dma_dev_setup(struct pnv_phb *phb, struct pci_dev *pdev */ } -static bool pnv_pci_ioda_pe_single_vendor(struct pnv_ioda_pe *pe) -{ - unsigned short vendor = 0; - struct pci_dev *pdev; - - if (pe->device_count == 1) - return true; - - /* pe->pdev should be set if it's a single device, pe->pbus if not */ - if (!pe->pbus) - return true; - - list_for_each_entry(pdev, &pe->pbus->devices, bus_list) { - if (!vendor) { - vendor = pdev->vendor; - continue; - } - - if (pdev->vendor != vendor) - return false; - } - - return true; -} - /* * Reconfigure TVE#0 to be usable as 64-bit DMA space. * @@ -1871,7 +1846,8 @@ static int pnv_pci_ioda_dma_set_mask(struct pci_dev *pdev, u64 dma_mask) */ if (dma_mask >> 32 && dma_mask > (memory_hotplug_max() + (1ULL << 32)) && - pnv_pci_ioda_pe_single_vendor(pe) && + /* pe->pdev should be set if it's a single device, pe->pbus if not */ + (pe->device_count == 1 || !pe->pbus) && phb->model == PNV_PHB_MODEL_PHB3) { /* Configure the bypass mode */ rc = pnv_pci_ioda_dma_64bit_bypass(pe); -- 2.19.0